Elliptic curve arithmetic: Difference between revisions
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m (→{{header|REXX}}: changed whitespace.) |
m (→{{header|Perl 6}}: given how clueless I am on the topic, please retract if I misunderstood anything; apparently the results from previous data set are not correct? for example, x=2, y=3.74165738677394 does not lie on y² = x³ + 7 ?) |
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say my $p = Point.new: x => $_, y => sqrt(abs( |
say my $p = Point.new: x => $_, y => sqrt(abs($_**3 + $A*$_ + $B)) given 1; |
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say my $q = Point.new: x => $_, y => sqrt(abs( |
say my $q = Point.new: x => $_, y => sqrt(abs($_**3 + $A*$_ + $B)) given 2; |
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say my $s = $p + $q; |
say my $s = $p + $q; |
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say "checking alignment: ", abs ($p.x - $q.x)*(-$s.y - $q.y) - ($p.y - $q.y)*($s.x - $q.x);</lang> |
say "checking alignment: ", abs ($p.x - $q.x)*(-$s.y - $q.y) - ($p.y - $q.y)*($s.x - $q.x);</lang> |
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{{out}} |
{{out}} |
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<pre>EC Point at x=1, y=2. |
<pre>EC Point at x=1, y=2.8284271247461903 |
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EC Point at x=2, y=3. |
EC Point at x=2, y=3.872983346207417 |
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EC Point at x=-1. |
EC Point at x=-1.9089023002066448, y=0.21008487055753378 |
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checking alignment: |
checking alignment: 0</pre> |
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=={{header|Phix}}== |
=={{header|Phix}}== |
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